CN1794271A - RFID tag and merchandise management system - Google Patents
RFID tag and merchandise management system Download PDFInfo
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- CN1794271A CN1794271A CN200510109680.1A CN200510109680A CN1794271A CN 1794271 A CN1794271 A CN 1794271A CN 200510109680 A CN200510109680 A CN 200510109680A CN 1794271 A CN1794271 A CN 1794271A
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- 238000005316 response function Methods 0.000 claims abstract description 85
- 230000004044 response Effects 0.000 claims abstract description 32
- 238000003860 storage Methods 0.000 claims description 148
- 238000004891 communication Methods 0.000 claims description 35
- 238000007600 charging Methods 0.000 claims description 21
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 description 15
- 230000006870 function Effects 0.000 description 13
- 230000008569 process Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000015654 memory Effects 0.000 description 6
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- 230000005540 biological transmission Effects 0.000 description 4
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- 230000008034 disappearance Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 241001269238 Data Species 0.000 description 2
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- 238000003825 pressing Methods 0.000 description 2
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- 238000012217 deletion Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2405—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used
- G08B13/2414—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used using inductive tags
- G08B13/2417—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used using inductive tags having a radio frequency identification chip
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2451—Specific applications combined with EAS
- G08B13/246—Check out systems combined with EAS, e.g. price information stored on EAS tag
Abstract
The present invention provides an RFID tag having an identification information response function that wirelessly transmits tag identification information stored in the RFID tag in response to a predetermined wireless request, wherein, the identification information response function becomes invalid after an invalidation instruction is input from outside follwed by a lapse of predetermined period of time.
Description
Technical field
The present invention relates to a kind of RFID (radio-frequency (RF) identification) label with identifying information response function, with a kind of commodity management system that uses this RFID label, this identifying information response function wirelessly sends the tag recognition information that is stored in the RFID label in response to a predetermined wireless request.
Background technology
In recent years, begun to concentrate in the use of RFID tag system in notices a lot of aspect the merchandise control.Such RFID tag system allows the contactless commodity data that is stored in the label that reads.In addition, this RFID tag system allows to read commodity data simultaneously from a plurality of labels.Therefore, such RFID tag system can improve the efficient of merchandise control significantly in the process of making, distributing and selling.
But the RFID label has following problem.Particularly, unique tag recognition information is assigned to each RFID label, and the RFID label is configured to send tag recognition information in response to the wireless request of an outside.As a result,, might discern each part commodity, so the when and where that exists this buyer to buy these commodity may be the danger known to others because by from attached to reading tag identifying information the RFID label of commodity.The information that also exists purchase history, credit card information and other to be stored in the database may be leaked danger to the stranger by using tag recognition information.In addition, also there is a kind of possibility, promptly when RFID label is attached to the bag that clothes or people carry, may be tracked by the motion of using that people of tag recognition information.These problems are commonly called " privacy problem of RFID label ", and the noticeable obstacle of RFID label is comprehensively adopted in representative on the retail level.
In order to solve RFID label privacy problem described above, a kind of technology has been proposed, wherein when buying commodity, an order that is called as " delete command " is sent to the RFID label from reader/writer so that this RFID label is invalid.
Disclose a kind of structure, wherein disposal password is stored among the RAM (random access memory), and this RAM is from the supply of power storage device received power, and when power storage device was discharged, this disposal password disappeared.Though this structure may be effectively reducing aspect use dangerous of going beyond one's commission of disposal password, when it does not solve privacy problem described above, because keep during this tag recognition information itself.
On the other hand, when after commodity are being bought, being return, if might be from a RFID label that is attached to those commodity reading tag identifying information and commodity data, the commodity that can manageablely return then, and might suitably answer customer requirements.
But, because invalid technique described above makes the RFID label invalid in these purchase commodity, thus can not be from the RFID label after finishing payment the reading tag identifying information, feasiblely can not easily manage the commodity of returning.
Summary of the invention
According to one aspect of the present invention, a kind of RFID label with identifying information response function is provided, it is in response to predetermined wireless request, wirelessly send the tag recognition information that is stored in this RFID label, wherein in illegal command after outside input, through predetermined a period of time, it is invalid that this identifying information response function becomes.
In addition,, provide a kind of RFID label, having comprised according to another aspect of the present invention: the identifying information response function, it wirelessly sends the tag recognition information that is stored in this RFID label in response to predetermined wireless request; Power storage device is used for storage power; Volatile storage is used to receive the power supply from this power storage device, and this identifying information response function of storage representation is effective validity information in advance; And control device, when this validity information is stored in this volatile storage, it determines that this identifying information response function is effective, and when this validity information is not stored in this volatile storage, it determines that this identifying information response function is invalid, wherein, when the voltage of this power storage device reduces and this validity information when disappearing, it is invalid that this identifying information response function becomes.
In addition, according to another aspect of the present invention, a kind of commodity management system is provided, comprise: the RFID label, it is attached on every commodity and has the identifying information response function, and this function is in response to predetermined wireless request, wirelessly send the tag recognition information that is stored in this RFID label, wherein in illegal command after outside input, through predetermined a period of time, it is invalid that this identifying information response function becomes; With a reader unit, it wirelessly sends this predetermined request and read this tag recognition information from this RFID label.
Description of drawings
To describe embodiments of the invention in detail based on accompanying drawing below, wherein:
Fig. 1 is a block scheme that commodity management system structure according to a first embodiment of the invention is shown;
Fig. 2 is a process flow diagram that the operation steps of being carried out by RFID label as shown in Figure 1 is shown;
Fig. 3 is a block scheme that illustrates according to the commodity management system structure of second embodiment of the present invention;
Fig. 4 is a process flow diagram that the operation steps of being carried out by RFID label as shown in Figure 3 is shown;
Fig. 5 is a block scheme that illustrates according to the commodity management system structure of the 3rd embodiment of the present invention; With
Fig. 6 is a process flow diagram that the operation steps of being carried out by RFID label as shown in Figure 5 is shown.
Embodiment
Embodiments of the invention are described below with reference to the accompanying drawings.
[first embodiment]
Fig. 1 is a block scheme that commodity management system 1 structure according to a first embodiment of the invention is shown.This commodity management system 1 is to use the RFID tag system to manage the system of commodity.The RFID tag system is the Individual Identification System of non-contact type, also is called non-contact ic tag system, wireless tag system or the like.The specification of RFID tag system is such as the type of tag system (comprise tight contact type, short range type, near type and remote-type), the pattern (comprising electromagnetic coupled pattern, electromagnetic induction pattern and radio-wave mode) of communicating by letter, can select according to requiring tag-powered pattern (comprising passive type and active type), communication protocol or the like.But, in the example of current embodiment, adopting passive type RFID tag system, this is usually preferably owing to cost or other reason.As shown in Figure 1, this commodity management system 1 comprises reader/writer 10, RFID label 20 and database 30.
Reader/writer 10 is a kind of from (perhaps to) these RFID label 20 wireless reading (perhaps record) data with to the device of these RFID label 20 power supplies.This reader/writer 10 is in the process of distributing commodity, perhaps in for the commodity payment, with these RFID label 20 swap datas that are attached on the commodity, and for example can be by merchandise control person carry portable, or in retail shop, be placed on fixed on the check-out counter.Because be well known in this field as this reader/writer 10 of using herein, here its detailed description is omitted.
Because this situation, in order to reduce this privacy problem, the management of returning commodity with simplification, RFID label 20 according to present embodiment has a kind of structure, make that it is invalid that this identifying information response function becomes after the predetermined a period of time that is begun by the time from the outside input from predetermined illegal command.In this structure, the method that is used to import an illegal command is not limited to specific method, but illegal command can be to import electronically, perhaps also can be physically to import.Beginning to define by any way from the input illegal command up to invalid predetermined a period of time.In addition, the invalid of this identifying information response function can be carried out in any suitable manner, and the control such as using based on software perhaps damages electronic installation.In the present embodiment, in case receive invalid command from this reader/writer 10, RFID label 20 is just measured elapsed time after this is received, and when this elapsed time exceeds predetermined a period of time, makes this identifying information response function invalid.
As shown in Figure 1, RFID label 20 comprises antenna 21, communication/supply unit 22, Nonvolatile memory devices 23, supply unit 24 and control device 25.
Communication/supply unit 22 is circuit that an executive communication processing and Power Conversion are handled, and for example uses demodulator circuit, modulator circuit, rectifier circuit and regulator circuit to form.Particularly, 22 demodulation of communication/supply unit send this control device 25 by the modulated signal that this antenna 21 receives to the reception data that will obtain.In addition, 22 modulation of communication/supply unit are sent to outside with the transmission signals that will obtain via this antenna 21 from the transmission data that this control device 25 receives.In addition, the electromagnetic wave that 22 responses of communication/supply unit come from the outside, AC (alternating current) voltage commutation that will be produced by this antenna 21 is DC (direct current) voltage, and this dc voltage is stabilized on the predetermined voltage, the DC power that obtains is offered the each several part of RFID label 20 as operating power.
In the present embodiment, unique ID is fired on this ROM 25b.In response to via antenna 21 with communicate by letter/predetermined request that supply unit 22 receives from reader/writer 10, unique ID that control device 25 will be stored among this ROM 25b sends reader/writer 10 to.In other words, control device 25 and antenna 21 with communicate by letter/supply unit 22 cooperates to realize the identifying information response function.
In addition, with reference to Nonvolatile memory devices 23, when validity information is stored in the Nonvolatile memory devices 23, control device 25 determines that the identifying information response function is effective, and when validity information was not stored in wherein, control device 25 determined that the identifying information response function is invalid.
In addition, control device 25 has timer function, and it measures the elapsed time after invalid command is imported from reader/writer 10, and when the elapsed time of this measurement exceeds predetermined a period of time, makes the identifying information response function invalid.More particularly, when elapsed time reached predetermined a period of time, control device 25 deletions were stored in the validity information in the Nonvolatile memory devices 23.Here, delete this validity information and comprise data are changed into uncertain value, and be different data data rewriting.
Should be noted that during stage of communication the power that provides from communication/supply unit 22 is provided control device 25, and during non-stage of communication, the power that provides from supply unit 24 is provided control device 25.
Fig. 2 is a process flow diagram that the operation steps of being carried out by RFID label 20 is shown.To describe the operation of this commodity management system 1 with reference to figure 2 below, focus is the operation about commodity X " before payment ", " on the point of sale ", " after payment (before invalid) " and " in payment (after invalid) afterwards " execution.Should be noted that validity information (for example a, bit " 1 ") is write in the Nonvolatile memory devices 23 in advance.
[before payment]
When merchandise control person wants at marketing channel or when retail shop is checked the commodity data of commodity X, this merchandise control person is placed on portable reader/register 10 on these part commodity X, and presses " reading " button (not shown) of reader/writer 10.In response to this action, reader/writer 10 wirelessly sends the predetermined request that unique ID is transmitted in a request.
In the RFID label 20 on being attached to these part commodity X, control device 25 via antenna 21 with communicate by letter/supply unit 22 receives above request (S11) afterwards, whether control device 25 definite (S12) identifying information response functions are effective.Particularly, when validity information is stored in the Nonvolatile memory devices 23, control device 25 determines that this function is effectively, and when validity information was not stored in the Nonvolatile memory devices 23, control device 25 determined that this function is invalid.At this moment, because Nonvolatile memory devices 23 storage validity information, control device 25 determines that the identifying information response functions are effectively (S12: be), and wirelessly sends (S13) via this antenna 21 and be stored in unique ID among the ROM 25b.
In response to the unique ID that receives from RFID label 20, reader/writer 10 is carried out predetermined processing based on that unique ID.For example, reader/writer 10 accessing databases 30 to be obtaining the commodity data relevant with this unique ID, and on the display (not shown) of reader/writer 10 this commodity data of demonstration.Therefore, merchandise control person can check the commodity data of commodity X.Alternatively, when commodity data was stored in the RFID label 20, reader/writer 10 can be configured to after receiving this unique ID and read commodity data from RFID label 20.
Next, because reader/writer does not send invalid command 10 this moments, thus there is not invalid command to be transfused to RFID label 20 (S14: deny), and radio communication is terminated.
[on the point of sale]
On the check-out counter in retail shop, work in an office when receiving commodity X from the buyer, also it is not paid the bill, this office worker is placed on these part commodity X in the predetermined scanning area, and by " reading " button of next fixed reader/writer 10, this fixed reader/writer 10 is placed on the check-out counter.In response, reader/writer 10 wirelessly sends the predetermined request that unique ID is transmitted in a request.
In the RFID label 20 on being attached to these part commodity X, receive above request (S11) afterwards at control device 25, whether the identifying information response function is effective to control device 25 definite (S12).At this moment, because Nonvolatile memory devices 23 storage validity information so control device 25 determines that the identifying information response function is effective (S12: be), and wirelessly send unique ID (S13) via antenna 21.
In response to the unique ID that receives from RFID label 20, reader/writer 10 accessing databases 30 obtaining the relevant price of unique ID with reception, and are presented at this price on the display.After finishing payment based on display message, the office worker presses reader/writer 10 " payment is finished " button (not shown), in response to this action, the sales histories record that reader/writer 10 will comprise the title in the shop of selling these part commodity, the date and time of sale etc. is associated with unique ID, and registers the sales histories record that is associated with unique ID in database 30.Reader/writer 10 also wirelessly sends an invalid command.
In RFID label 20, after reader/writer 10 receives invalid command (S14: be), control device 25 begins to measure elapsed time (S15) at control device 25.In addition, when the elapsed time of measuring reaches predetermined a period of time (S16: be), control device 25 is deleted validity information from non-volatile memory storage 23, so that identifying information response function invalid (S17).Though above-described predetermined a period of time can be according to usage of trade by according to requiring to consider the time of return setting, be preferably this time to be set to about 3 to 14 days, and in this embodiment, this time was set to 7 days.
[after payment (before invalid)]
Sold (in time of return) afterwards at commodity X, when the buyer wants to return these part commodity X, and carrying them in 7 days arrives in the retail shop, the office worker is placed on commodity X in the predetermined scanning area, and presses " reading " button of the reader/writer 10 that is placed on the check-out counter.In response to this action, reader/writer 10 wirelessly sends the predetermined request that unique ID is transmitted in a request.
In the RFID label 20 on being attached to commodity X, receive above request (S11) afterwards at control device 25, whether this identifying information response function is effective to control device 25 definite (S12).At this moment, because Nonvolatile memory devices 23 storage validity information, control device 25 determines that this identifying information response function is effective (S12: be), and wirelessly sends unique ID (S13) via antenna 21.
In response to the unique ID that receives from RFID label 20, reader/writer 10 accessing databases 30 with the sales histories record that obtains to be associated with unique ID, and write down this sales histories and are presented on the display of reader/writer 10.Therefore, this office worker might check the shop of these part commodity of sale and the date and time of sale, and therefore handles this part easily and return commodity.In addition, the request of returning might be suitably answered, and the user might be suitably answered.
Subsequently, because reader/writer does not send invalid command 10 this moments, thus there is not invalid command to be transfused to RFID label 20 (S14: deny), and radio communication is terminated.
[after payment (after invalid)]
Next will describe a kind of situation, wherein after commodity X was sold, after through 7 days (scope that surpasses time of return), the third party tried to use reader/writer to read unique ID from the RFID label 20 of these part commodity X.In this case, reader/writer 10 wirelessly sends the predetermined request that unique ID is transmitted in a request.
In this RFID label 20 on being attached to these part commodity X, receive above request (S11) afterwards at control device 25, whether the identifying information response function is effective to control device 25 definite (S12).At this moment, because this function is invalid, and non-volatile memory storage 23 do not store validity information, is invalid (S12: not), and wirelessly do not send unique ID (S18) so control device 25 is determined the identifying information response functions.For example, control device 25 can be configured to provide no response to above request.As selection, control device 25 can be configured to send error notification information except that unique ID or other information.Therefore, the third party can not read unique ID from RFID label 20, and prevents leakage of information.
Embodiment described above provides following result:
(1) because an illegal command from the RFID label after the outside input, through predetermined a period of time, it is invalid that the identifying information response function becomes, might be in this predetermined a period of time the reading tag identifying information, yet can not outside this predetermined a period of time, read this tag recognition information.Therefore, might be convenient to handle the commodity of returning, reduce the danger of leakage of information simultaneously.
(2) because the elapsed time after the illegal command input is measured, and when the elapsed time of this measurement exceeds predetermined a period of time, the identifying information response function is invalid, so might make this identifying information response function invalid on the time point of expectation exactly.
[second embodiment]
Fig. 3 is a block scheme that illustrates according to commodity management system 2 structures of second embodiment of the present invention.This commodity management system 2 has the identical characteristics of commodity management system many and described above 1, but is to use a RFID label with different structure.Especially, the RFID label 40 of the embodiment that this is current comprises the power storage device 43 of a storage power, and after illegal command was transfused to, when the voltage of power storage device 43 is reduced to lower than predetermined voltage the time, it is invalid that the identifying information response function becomes.In the description of commodity management system 2, it uses identical reference number to be used to represent the parts identical with commodity management system described above 1, and here its explanation is omitted.
As shown in Figure 3, RFID label 40 comprises antenna 41, communication/supply unit 42, power storage device 43, volatile storage 44, Nonvolatile memory devices 45 and control device 46.Among these devices, antenna 41 with communicate by letter/supply unit 42 is similar to the device of commodity management system 1 described above.
Fig. 4 is a process flow diagram that the operation steps of being carried out by RFID label 40 is shown.To describe the operation of commodity management system 2 with reference to figure 4 below, focus is the operation about commodity X " before payment ", " on the point of sale ", " after payment (before invalid) " and " in payment (after invalid) afterwards " execution.In this embodiment, in original state, volatile storage 44 is not stored this validity information, and Nonvolatile memory devices 45 is not stored invalidity information.In the following description, suitably simplified corresponding to those explanations of commodity management system 1 described above.
[before payment]
Along with marketing channel or at retail shop, when merchandise control person is placed on portable reader/register 10 on the commodity X, and when pressing " reading " button of reader/writer 10, reader/writer 10 wirelessly sends a predetermined request.
In this RFID label 40 on being attached to these part commodity X, receive above request (S21) afterwards at control device 46, whether the identifying information response function is effective to control device 46 definite (S22).Particularly, when invalidity information was not stored in the Nonvolatile memory devices 45, perhaps when validity information was stored in the volatile storage 44, control device 46 determined that this function is effective, and otherwise control device 46 determines that this function is invalid.At this moment, because Nonvolatile memory devices 45 is not stored invalidity information, control device 46 determines that the identifying information response function is effective (S22: be), and wirelessly sends unique ID (S23) via antenna 41.
In response to the unique ID that receives from RFID label 40, the commodity data that reader/writer 10 obtains and demonstration is associated with this unique ID.
Subsequently, because reader/writer does not send invalid command 10 this moments, (S24: not), and radio communication is terminated so there is not invalid command to input to RFID label 40.
[on the point of sale]
On check-out counter, when the commodity X that does not also have to buy is placed in the scanning area, and fixed reader/writer 10 " reading " when button is pressed, and reader/writer 10 wirelessly sends a predetermined request.
In the RFID label 40 on being attached to these part commodity X, receive above request (S21) afterwards at control device 46, whether the identifying information response function is effective to control device 46 definite (S22).At this moment, because Nonvolatile memory devices 45 is not stored invalidity information,, and wirelessly send unique ID (S23) via antenna 41 so control device 46 determines that the identifying information response function is effective (S22: be).
In response to the unique ID that receives from RFID label 40, reader/writer 10 shows the price that is associated with this unique ID.After finishing payment based on display message, the office worker presses " payment is finished " button (not shown) of reader/writer 10.In response to this action, reader/writer 10 writes down sales histories with unique ID and is associated, and registers the sales histories record that is associated with unique ID in database 30.In addition, reader/writer 10 wirelessly sends an invalid command.
In RFID label 40, at control device 46 after reader/writer 10 receives invalid commands (S24: be), control device 46 is provided with validity information (in this embodiment in volatile storage 44, " a 101010 " bit string), and invalidity information (" 1 " of a bit in this embodiment) is set (S25) in Nonvolatile memory devices 45.In this, to be set up the reason that comprises a plurality of bits be because the data that are stored among the RAM when this data disappear become a uncertain value to validity information.
In radio communication described above, preferably the power storage device 43 of RFID label 40 is charged to a degree, makes the amount that is stored in power wherein be approximately equal to its capacity, that is to say, is approximately equal to fully charged state.In this embodiment, reader/writer 10 is launched the electromagnetic wave of the predetermined a period of time that is used for the full charge needs so that power storage device 43 is charged.In this, though the capacity of power storage device 43 can consider that time of return is according to requiring selection according to usage of trade, preferably this capacity equals to preserve 3 to 14 days essential amounts of validity information, and in this embodiment, this capacity is set to preserve about 7 days essential amounts of validity information.Though should be noted that power storage device 43 is fully charged in this embodiment, it preferably also is that power storage device 43 is charged to the predetermined electric power memory space less than the power storage device capacity.In addition, though in this embodiment, power storage device 43 is by charging in payment, and charging can be carried out on different time points.In addition, though electromagnetic wave is launched predetermined a period of time in this embodiment, electromagnetic wave can receive from RFID label 40 charging finish the notice before be launched.
In addition, provide the situation that can postpone the time of disappearance in order to avoid extra power reliably, preferably, after the invalid command input, the charging of power storage device 43 is under an embargo.In this embodiment, communication/supply unit 42 is configured to make that when invalidity information was stored in the Nonvolatile memory devices 45, it is invalid that the charge function of power storage device 43 becomes.
After finishing radio communication described above, the power storage amount of power storage device 43 reduces by discharge, and the voltage of power storage device 43 reduces.When the voltage of power storage device 43 is reduced to than keeping being stored in the essential voltage of data in the volatile storage 44 lower the time, the validity information that writes on step S25 disappears, and the identifying information response function become invalid.In this embodiment, extra charging is under an embargo after the input invalid command, and this validity information disappears after through about 7 days.
[after payment (before invalid)]
After these part commodity X is sold, when the buyer wants to return these part commodity X, and in 7 days, carry it in the retail shop, the office worker is placed on these commodity X in the predetermined scanning area, and presses " reading " button of reader/writer 10.In response to this action, reader/writer 10 wirelessly sends a predetermined request.
In the RFID label 40 on being attached to these commodity X, receive above request (S21) afterwards at control device 46, whether the identifying information response function is effective to control device 46 definite (S22).At this moment, because Nonvolatile memory devices 44 storage validity information so control device 46 determines that the identifying information response function is effective (S22: be), and wirelessly send unique ID (S23) via antenna 41.
In response to the unique ID that receives from RFID label 40, the sales histories record that reader/writer 10 obtains and demonstration is associated with this unique ID.Therefore, this office worker might check the shop of these part commodity of sale and the date and time of sale, and therefore handles this part easily and return commodity.
Then, because reader/writer does not send invalid command 10 this moments, thus there is not invalid command to be transfused to RFID label 40 (S24: deny), and radio communication is terminated.
[after payment (after invalid)]
Next will describe a kind of situation, wherein after these part commodity X was sold, after through 7 days, the third party tried to use a reader/writer to read unique ID from the RFID label 40 of these commodity X.In this case, reader/writer 10 wirelessly sends a predetermined request.
In the RFID label 40 on being attached to these commodity X, receive above request (S21) afterwards at control device 46, whether the identifying information response function is effective to control device 46 definite (S22).At this moment, because Nonvolatile memory devices 45 storage invalidity information, and volatile storage 44 is not stored validity information, is invalid (S22: not), and wirelessly do not send unique ID (S26) so control device 46 is determined the identifying information response function.Therefore, the third party can not read unique ID from RFID label 40, and prevents leakage of information.
Except the result who is similar to result described above (1), embodiment described above provides following result.
(3) in the RFID label according to current embodiment, after illegal command was transfused to, when the voltage of power storage device is reduced to lower than predetermined voltage the time, it is invalid that the identifying information response function becomes.Therefore, when with when wherein the measured structure of elapsed time is compared after illegal command is transfused to, might reduce power consumption, and might reduce the capacity of power storage device.Therefore, might reduce the size and the cost of RFID label.
(4) to be configured to be chargeable to power storage device, and the energy conversion that the RFID label will provide from the outside is power, and use the power of this generation that power storage device is charged.Therefore, might on the time of expectation, power storage device be charged to the power storage amount of expectation, and, might during a period of time before the input illegal command disappears to validity information, reduce and change when when power storage device is used situation that primary element (wherein the power storage amount little by little is reduced by discharge naturally) forms and compares.
(5) the RFID label is a kind of passive-type label that comprises communication/supply unit, the electromagnetic wave energy that the conversion of communication/supply unit provides from the outside is to produce power, and it uses this power that is produced by this communication/supply unit as operating power, and power storage device is to be charged by the power that communication/supply unit produces.Therefore, when adopting passive-type RFID label, do not need to increase the adjunct circuit that is used for power transfer, and might realize that the simplification of this structure and cost reduce.
(6) because power storage device is charged to predetermined storage power in payment, so a period of time till might keeping being accomplished to validity information and disappearing from payment approximately is constant.
(7) because after illegal command is transfused to, the charging of power storage device is under an embargo, and can postpone the situation of the time of validity information disappearance so might prevent wherein extra charging.
[the 3rd embodiment]
Fig. 5 is a block scheme that illustrates according to commodity management system 3 structures of the 3rd embodiment of the present invention.This commodity management system 3 has the identical characteristics of commodity management system many and described above 2, but is to use a RFID label with different structure.Particularly, the RFID label 50 of current embodiment comprises the volatile storage 54 of storing validity information in advance, and reduces and the disappearance of validity information the time, it is invalid that the identifying information response function becomes when the voltage of power storage device 53.Except reader/writer 10, RFID label 50 and database 30, the commodity management system 3 of current embodiment further comprises a supply unit 60.Though will be described below commodity management system 3, identical reference number is used to indicate the identical parts of device with commodity management system 1 described above or 2, and here its explanation is omitted.
As shown in Figure 5, RFID label 50 comprises antenna 51, communication/supply unit 52, power storage device 53, volatile storage 54 and control device 55.Among these devices, antenna 51, communication/supply unit 52, power storage device 53 and volatile storage 54 are similar to the device of commodity management system 2 described above.
Control device 55 is used to control whole RFID label 50, and is a circuit in this embodiment, and it comprises CPU 55a, ROM 55b and RAM 55c.In current embodiment, when validity information is stored in the volatile storage 54, control device 55 determines that the identifying information response function is effective, and when validity information was not stored in the volatile storage 54, control device 55 determined that the identifying information response function is invalid.
Supply unit 60 is unit, and its launching electromagnetic wave is with to RFID label 50 supply powers.This supply unit 60 is used to power storage device 53 chargings to RFID label 50, and be provided on the position in the channel of goods distribution, such as warehouse, freighter, van and retail shop, so that the storage of remaining valid property information in volatile storage 54.Should be noted that supply unit 60 can be fixed, it is placed in warehouse, cask, showroom or the like, perhaps can be portable, and it will be carried by merchandise control person.
Fig. 6 is a process flow diagram that the operation steps of being carried out by RFID label 50 is shown.Below the operation of commodity management system 3 will be described with reference to figure 6, in the operation that focus is to carry out about X " before payment ", " on the point of sale ", " after payment (before invalid) " and " after payment (after invalid) ".In the following description, volatile storage 54 is stored validity information (bit string of " 101010 " in this embodiment) in advance.In this, to be set up the reason that comprises a plurality of bits be because the data that are stored among the RAM when this data disappear become a uncertain value to validity information.In addition, validity information can be used the special reader/writer on the process units of for example this RFID label 50 or commodity, is written to volatile storage 54 based on specific communication protocol.As selection, can use the specific purpose tool that is wired to volatile storage 54 to write validity information.In the following description, suitably simplified corresponding to those explanations of commodity management system 1 described above or 2.
[before payment]
The RFID label 50 that is attached on these commodity X receives from being provided at the power that marketing channel or the locational supply unit 60 in the shop provide.Therefore, the power storage device 53 of RFID label 50 is recharged, and the storage of validity information is held.It should be noted that, the specific method that power provides is not limited to a kind of specific method, but for example power can by continuously or the electromagnetic wave that sends from fixed supply unit 60 off and on provide, perhaps merchandise control person can carry protable power unit 60, and removes to provide power along the road stop.
In distribution warehouse or retail shop, when merchandise control person places portable reader/register 10 on these commodity X, and when pressing " reading " button of reader/writer 10, reader/writer 10 wirelessly sends a predetermined request.
In the RFID label 50 on being attached to commodity X, at control device 55 from the request (S31) more than reader/writer 10 receptions afterwards, control device 55 determines (S32) whether the identifying information response function is effective.Particularly, when validity information is stored in the volatile storage 54, control device 55 determines that this function is effectively, and when validity information was not stored in this volatile storage 54, control device 55 determined that this function is invalid.At this moment, because volatile storage 54 these validity information of storage so control device 55 determines that the identifying information response function is effective (S32: be), and wirelessly send unique ID (S33) via antenna 51.
In response to the unique ID that receives from RFID label 50, this commodity data that reader/writer 10 obtains and demonstration is associated with this unique ID.
[on the point of sale]
On check-out counter, when the commodity X that does not also pay the bill is placed in the scanning area, and fixed reader/writer 10 " reading " when button is pressed, and reader/writer 101 wirelessly sends a predetermined request.
In this RFID label 50 on being attached to commodity X, receive above request (S31) afterwards at control device 55, whether this identifying information response function is effective to control device 55 definite (S32).At this moment, because volatile storage 54 storage validity information so control device 55 determines that the identifying information response function is effective (S32: be), and wirelessly send unique ID (S33) via antenna 51.
In response to the unique ID that receives from RFID label 50, the price that reader/writer 10 obtains and demonstration is associated with this unique ID.After finishing payment based on this display message, this office worker presses reader/writer 10 " payment is finished " button, in response to this action, reader/writer 10 writes down sales histories with unique ID and is associated, and the sales histories record that registration is associated with this unique ID in database 30.
In radio communication described above, preferably the power storage device 53 of RFID label 50 is charged to a degree, makes the amount that is stored in power wherein be approximately equal to its capacity, that is to say, is approximately equal to fully charged state.In this embodiment, reader/writer 10 emissions are used for the electromagnetic wave of predetermined a period of time of full charge needs, so that this power storage device 53 is charged.In this, though the capacity of power storage device 53 can consider that time of return is according to the expectation selection according to usage of trade, preferably this capacity equals to preserve this validity information 3 to 14 necessary amounts, and in this embodiment, this capacity is set to preserve about 7 days necessary amounts of this validity information.Though should be noted that power storage device 53 is fully charged in this embodiment, it preferably also is that power storage device 53 is charged to the predetermined electric power memory space less than the power storage device capacity.In addition, though electromagnetic wave is launched predetermined a period of time in this embodiment, electromagnetic wave can receive from RFID label 50 charging finish the notice before be launched.
After finishing payment, this buyer removes these commodity X from this shop.In other words, after finishing radio communication described above, RFID label 50 is by from providing the location of power to remove from supply unit 60 or reader/writer 10.Therefore, power storage device 53 does not receive extra power supply, and the power storage amount of power storage device 53 reduces by discharge, and the voltage of power storage device 53 reduces.When the voltage of power storage device 53 was reduced to less than the necessary voltage of data that keeps being stored in the volatile storage 54, the validity information of storage disappeared in volatile storage 54, and the identifying information response function become invalid.In this embodiment, after finishing payment, this validity information disappears after through about 7 days.
[after payment (before invalid)]
After these commodity X is sold, when this buyer wants to return these commodity X, and in 7 days, carry it in the retail shop, the office worker is placed on these commodity X in the predetermined scanning area, and presses " reading " button of reader/writer 10.In response to this action, reader/writer 10 wirelessly sends a predetermined request.
In the RFID label 50 on being attached to these commodity X, receive above request (S31) afterwards at control device 55, whether the identifying information response function is effective to control device 55 definite (S32).At this moment, because volatile storage 54 storage validity information so control device 55 determines that the identifying information response function is effective (S32: be), and wirelessly send unique ID (S33) via antenna 51.
In response to the unique ID that receives from RFID label 50, the sales histories record that reader/writer 10 obtains and demonstration is associated with this unique ID.Therefore, this office worker might verify the shop of these part commodity of sale and the date and time of sale, and therefore handles this part easily and return commodity.
[after payment (after invalid)]
Next will describe a kind of situation, wherein after these commodity X was sold, after through 7 days, the third party tried to use a reader/writer to read unique ID from the RFID label 50 of these commodity X.In this case, reader/writer 10 wirelessly sends a predetermined request.
In the RFID label 50 on being attached to these commodity X, receive above request (S31) afterwards at control device 55, whether the identifying information response function is effective to control device 55 definite (S32).At this moment, because volatile storage 54 is not stored validity information, be invalid (S32: not), and wirelessly do not send unique ID (S34) so control device 55 is determined the identifying information response function.As a result, the third party can not read unique ID from RFID label 50, and prevents leakage of information.
Except the result who is similar to result described above (1), embodiment described above also provides following result.
(8) in the RFID label according to current embodiment, after the charging of power storage device stopped, when the voltage of power storage device is reduced to lower than predetermined voltage the time, it is invalid that the identifying information response function becomes.Therefore, compare, might reduce power consumption, and might reduce the capacity of power storage device with the structure that elapsed time wherein is measured.As a result, might reduce the size and the cost of this RFID label.In addition, because do not need from outside input illegal command, so this communication steps can be simplified, and office worker's operation burden is lowered.In addition, because do not need Nonvolatile memory devices, so be useful at this current embodiment aspect size that reduces this RFID label and the cost.
(9) input when the employing illegal command is the structure that receives from the outside, and after this illegal command is transfused to, when the charging of power storage device is under an embargo, might prevent that wherein extra charging from can postpone the situation of the die-out time of validity information.For example, so a kind of structure will be described below.That is, when " payment is finished " when button is pressed, reader/writer 10 wirelessly sends an invalid command.Then, in response to the reception of this invalid command, it is invalid that the control device 55 of RFID label 50 is used in the charge function of this power storage device 53 chargings with a kind of suitable method.
Should be understood that the present invention is not limited to embodiment described above, but can change in every way not deviating under the mental condition of the present invention.
For example, though power storage device is by being converted to electromagnetic wave energy the power charging in second and the 3rd embodiment described above, but the present invention is not limited to such embodiment, but replacement electromagnetic wave energy, can use the energy of other types, such as luminous energy, heat energy and energy of vibration.But, in the case, must provide a power conversion device in addition, its energy of providing from the outside of conversion to be producing power, and the power that uses this generation is to this power storage device charging.
In addition, this RFID label as the merchandise control label can also be used as the label of committing theft in the shop of preventing.For example, the information whether expression finishes payment is stored in the Nonvolatile memory devices of RFID label, and in that when " payment is finished " finished payment, this information was rewritten from " it is undetermined to pay the bill ".Therefore, if exist a kind of inlet in the shop etc. to locate to read the structure of this information, the RFID label might be used as the label of committing theft in the shop of preventing.
The Japanese patent application No.2004-371839 that submits on Dec 22nd, 2004 discloses, and comprises that instructions, claim, accompanying drawing and summary are used as reference integral body and are combined in herein.
Claims (16)
1. RFID label comprises:
The identifying information response function is used in response to predetermined wireless request, wirelessly sends the tag recognition information that is stored in this RFID label, wherein
After the input of outside, through predetermined a period of time, it is invalid that this identifying information response function becomes in illegal command.
2. RFID label according to claim 1 comprises timing device, is used to measure described illegal command input institute's elapsed time afterwards, wherein
When this elapsed time of being measured by this timing device exceeded predetermined a period of time, it is invalid that described identifying information response function becomes.
3. RFID label according to claim 1 comprises the power storage device that is used for storage power, wherein
After described illegal command input, the voltage of this power storage device is reduced to when being lower than predetermined voltage, and it is invalid that described identifying information response function becomes.
4. RFID label according to claim 1 comprises:
Power storage device is used for storage power;
Volatile storage is used to receive the power supply from this power storage device, and the described identifying information response function of storage representation is effective validity information;
Nonvolatile memory devices, except described validity information was stored in the described volatile storage, this nonvolatile storage device stores represented that described identifying information response function is invalid invalidity information;
The information setting device is used in described volatile storage described validity information being set, and when the described illegal command of input, described invalidity information is set in described Nonvolatile memory devices; With
Control device, be used for when described invalidity information is not stored in described Nonvolatile memory devices, perhaps when described validity information is stored in the described volatile storage, determine that described identifying information response function is effective, otherwise, determine that this identifying information response function is invalid, wherein
When reduction of the voltage of described power storage device and described validity information disappeared after importing described illegal command, it is invalid that described identifying information response function becomes.
5. RFID label according to claim 3 further comprises power conversion device, and the energy conversion that is used for providing from the outside is a power, and utilizes the power that is produced by this power conversion device to come described power storage device charging.
6. RFID label according to claim 5, wherein
The described energy that provides from the outside be electromagnetic wave energy and
This RFID label is the passive-type label, and it uses the power that is produced by described power conversion device as operating power.
7. RFID label according to claim 5, wherein
After the described illegal command of input, the charging of described power storage device is under an embargo.
8. RFID label according to claim 6, wherein
After the described illegal command of input, the charging of described power storage device is under an embargo.
9. RFID label comprises:
The identifying information response function is used in response to predetermined wireless requirement, wirelessly sends the tag recognition information that is stored in this RFID label,
Power storage device is used for storage power;
Volatile storage is used to receive the power supply from this power storage device, and the described identifying information response function of storage representation is effective validity information in advance; With
Control device, be used for when described validity information is stored in this volatile storage, determine that described identifying information response function is effective, and when described validity information is not stored in this volatile storage, determine that described identifying information response function is invalid, wherein
When the voltage of this power storage device reduces and this validity information when disappearing, it is invalid that described identifying information response function becomes.
10. RFID label according to claim 9 further comprises power conversion device, and the energy conversion that is used for providing from the outside is a power, and utilizes the power that is produced by this power conversion device to come described power storage device charging.
11. RFID label according to claim 10, wherein
The described energy that provides from the outside be electromagnetic wave energy and
This RFID label is the passive-type label, and it uses the power that is produced by described power conversion device as operating power.
12. RFID label according to claim 10, wherein
After outside input illegal command, the charging of described power storage device is under an embargo.
13. RFID label according to claim 11, wherein
After outside input illegal command, the charging of described power storage device is under an embargo.
14. a commodity management system comprises:
The RFID label, it is attached on every commodity and has the identifying information response function, this function is in response to predetermined wireless request, wirelessly send the tag recognition information that is stored in this RFID label, wherein, after the input of outside, through predetermined a period of time, it is invalid that this identifying information response function becomes in illegal command; With
Reader unit is used for wirelessly sending this predetermined request and reads this tag recognition information from this RFID label.
15. a commodity management system comprises:
The RFID label, it is attached on every commodity and has the identifying information response function, and this function wirelessly sends the tag recognition information that is stored in this RFID label in response to predetermined wireless request,
Power storage device is used for storage power;
Volatile storage is used to receive the power supply from this power storage device, and the described identifying information response function of storage representation is effective validity information in advance; With
Control device, be used for when described validity information is stored in this volatile storage, determine that described identifying information response function is effective, and when described validity information is not stored in this volatile storage, determine that described identifying information response function is invalid;
Reader unit is used for wirelessly sending this predetermined request and reads this tag recognition information from this RFID label, wherein
When the voltage of this power storage device reduces and this validity information when disappearing, it is invalid that described identifying information response function becomes.
16. commodity management system according to claim 14 further comprises communication unit, when finishing the payment of commodity, this communication unit sends to described illegal command on the RFID label that is attached on these part commodity.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004371839A JP4682616B2 (en) | 2004-12-22 | 2004-12-22 | RFID tag and product management system |
| JP371839/2004 | 2004-12-22 |
Publications (2)
| Publication Number | Publication Date |
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| CN1794271A true CN1794271A (en) | 2006-06-28 |
| CN100428272C CN100428272C (en) | 2008-10-22 |
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| CNB2005101096801A Expired - Fee Related CN100428272C (en) | 2004-12-22 | 2005-09-16 | RFID tag and merchandise management system |
Country Status (3)
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|---|---|
| US (1) | US7471201B2 (en) |
| JP (1) | JP4682616B2 (en) |
| CN (1) | CN100428272C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101872519A (en) * | 2007-07-26 | 2010-10-27 | 东芝泰格有限公司 | Article sales data processing apparatus and method |
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| JP4709674B2 (en) * | 2006-03-23 | 2011-06-22 | 株式会社ワコム | Position detection apparatus and computer |
| JP4862577B2 (en) * | 2006-09-14 | 2012-01-25 | 日本電気株式会社 | IC tag, product management system and product management method |
| JP2008084245A (en) * | 2006-09-29 | 2008-04-10 | Hitachi Ltd | Electronic device system having identifier |
| US8064089B2 (en) * | 2006-10-04 | 2011-11-22 | Xerox Corporation | Automatic indexing of printed documents |
| JP5071016B2 (en) * | 2006-10-23 | 2012-11-14 | 富士通株式会社 | RFID tag response control method, RFID system, RFID tag, response control information generation program, and response control program |
| KR100833512B1 (en) | 2006-12-08 | 2008-05-29 | 한국전자통신연구원 | Apparatus for storing sensor data in tag and method thereof |
| KR100833511B1 (en) | 2006-12-08 | 2008-05-29 | 한국전자통신연구원 | Passive tag with volatile memory |
| JP4319683B2 (en) * | 2007-01-19 | 2009-08-26 | 東芝テック株式会社 | Wireless tag reader |
| JP2008298495A (en) * | 2007-05-30 | 2008-12-11 | Hitachi High-Technologies Corp | Specimen rack and specimen conveyance system |
| TWI415006B (en) * | 2009-01-20 | 2013-11-11 | Mstar Semiconductor Inc | Rfid tag and operating method thereof |
| JP5037576B2 (en) * | 2009-08-27 | 2012-09-26 | 東芝テック株式会社 | Product sales data processing device |
| JP2011081619A (en) * | 2009-10-07 | 2011-04-21 | Toshiba Tec Corp | Sales data processing terminal and program |
| US20170250808A1 (en) * | 2009-12-10 | 2017-08-31 | Jena Jordahl | Methods and systems for personal authentication |
| HK1145128A2 (en) * | 2010-11-25 | 2011-04-01 | Kwai Sang Danny So | Device and method for detecting water level, and device adapted for such method and container adapted for such device |
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| JPWO2022102483A1 (en) * | 2020-11-16 | 2022-05-19 | ||
| WO2023147585A2 (en) * | 2022-01-31 | 2023-08-03 | Automaton, Inc. DBA RADAR | Stateful inventory for monitoring rfid tags |
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| JP2002074286A (en) | 2000-08-30 | 2002-03-15 | Toppan Forms Co Ltd | Merchandise management tag, method and system for managing merchandise using the tag |
| WO2002063415A2 (en) * | 2000-12-04 | 2002-08-15 | Genaissance Pharmaceuticals, Inc. | System and method for the management of genomic data |
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- 2005-09-16 CN CNB2005101096801A patent/CN100428272C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101872519A (en) * | 2007-07-26 | 2010-10-27 | 东芝泰格有限公司 | Article sales data processing apparatus and method |
| US8044803B2 (en) | 2007-07-26 | 2011-10-25 | Toshiba Tec Kabishiki Kaisha | Article sales data processing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006178770A (en) | 2006-07-06 |
| US20060145857A1 (en) | 2006-07-06 |
| JP4682616B2 (en) | 2011-05-11 |
| US7471201B2 (en) | 2008-12-30 |
| CN100428272C (en) | 2008-10-22 |
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